Controller functions
36
UPT-640 (as of SW 100)
The various hold modes are shown below:
The word "Hold" appears on the display if a tempera-
ture value is indicated in hold mode. It disappears for
approximately 100ms whenever the hold value is
updated.
9.15
Measuring impulse duration
The length of the measuring impulses generated by the
controller can be set with this parameter by means of
step 220. It may be necessary to set a measuring
impulse that is longer than the default 1.7ms for certain
applications (
ROPEX Application Report).
9.16
Locking the "HAND" key
The "HAND" key function can be configured with
step 213 in the Configuration meun when the display is
in home position.
This prevents the heatsealing bands from beeing
heated if the "HAND" key is pressed inadvertenly.
The following settings are possible:
1. Lock
„OFF“ (Factory setting)
Pressing the "HAND" key while the display is in the
home position starts amanual heating process. The
heatsealing band is heated as long as the "HAND"
key remains pressed.
2. Lock
„ON“
The "HAND" key is locked when the display is in the
home position, in other words it has no function.
9.17
Temperature unit
Celsius / Fahrenheit
(as of software revision 103)
As of software revision 103 the unit for the temperature
indication and value selection can be switched between
°C (Celsius) and °F (Fahrenheit).
1.
„Celsius“ (Factory setting)
Temperature indication and value selection in
Celsius (°C).
2.
„Fahrenheit“
Temperature indication and value selection in
Fahrenheit (°F)
Up to software revision 102 only Celsius (°C) can be
specified on the controller as the temperature unit.
The degree unit can be changed on the con-
troller without interrupting operation
If you specify temperature indication and
value selection in Fahrenheit (°F), the con-
troller still uses Celsius (°C) internally. Value steps
are therefore possible with this function owing to
the conversion from Celsius to Fahrenheit.
ACTUAL
temp.
START
signal
24VDC
T
t
t
0
0
Hold OFF
T
t
0
ACTUAL indication
Hold ON
T
t
0
Hold 2 s
T
t
0
Hold
Hold
Hold
Hold
End of
heating phase
2 s
2 s
!
!
